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Finding the Fourth Proportional to 71,928,233.60, 107,892,350.40 and 71,424,348.80

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Solution

The fourth proportional to 71,928,233.60, 107,892,350.40 and 71,424,348.80 is: 107,136,523.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,928,233.60 : 107,892,350.40 = 71,424,348.80 : x
  2. Step 2: Convert to fraction form
    71,928,233.60/107,892,350.40 = 71,424,348.80/x
  3. Step 3: Cross multiply
    71,928,233.60x = 107,892,350.40 × 71,424,348.80
  4. Step 4: Simplify right side
    71,928,233.60x = 7,706,140,867,821,420
  5. Step 5: Solve for x
    x = 7,706,140,867,821,420/71,928,233.60
  6. Step 6: Final answer
    x = 107,136,523.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.